Home / 113,013.36-155,979.92-74,773.68

Finding the Fourth Proportional to 113,013.36, 155,979.92 and 74,773.68

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Solution

The fourth proportional to 113,013.36, 155,979.92 and 74,773.68 is: 103,201.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,013.36 : 155,979.92 = 74,773.68 : x
  2. Step 2: Convert to fraction form
    113,013.36/155,979.92 = 74,773.68/x
  3. Step 3: Cross multiply
    113,013.36x = 155,979.92 × 74,773.68
  4. Step 4: Simplify right side
    113,013.36x = 11,663,192,624.51
  5. Step 5: Solve for x
    x = 11,663,192,624.51/113,013.36
  6. Step 6: Final answer
    x = 103,201.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.